In aeronautics, expansion and shock tunnels are aerodynamic testing facilities with a specific interest in high speeds and high temperature testing. Shock tunnels use steady flow nozzle expansion whereas expansion tunnels use unsteady expansion with higher enthalpy, or thermal energy. In both cases the gases are compressed and heated until the gases are released, expanding rapidly down the expansion chamber. The tunnels reach speeds from Mach 3 to Mach 30 to create testing conditions that simulate hypersonic to re-entry flight. These tunnels are used by military and government agencies to test hypersonic vehicles that undergo a variety of natural phenomenon that occur during hypersonic flight.[1]
^Stalker R.J."Modern developments in hypersonic wind tunnels,"The Aeronautical Journal January 2006
expansion and shock tunnels are aerodynamic testing facilities with a specific interest in high speeds and high temperature testing. Shock tunnels use...
the creation of the tunnel spoke with The Forward, claiming that they were "taking initiative on a long-deferred synagogue expansion." A New York City Department...
not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be...
In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or...
Channel Tunnel (French: Tunnel sous la Manche), sometimes referred to informally as the Chunnel, is a 50.46-kilometre (31.35 mi) undersea railway tunnel, opened...
of Pittsburgh and the city, beneath Mt. Washington. The tunnels were vital in the expansion of the South Hills suburbs by providing a direct route to...
The Boring Company (TBC) is an American infrastructure, tunnel construction services, and equipment company founded by Elon Musk. TBC was founded as a...
Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Interstate 90 to Logan International Airport...
tubes (and related impulse facilities such as shock tunnels, expansion tubes, and expansiontunnels) can also be used to study aerodynamic flow under a...
repairs and expansion to the tunnel. Any time you build a complex interchange in a downtown metropolitan area with an underwater tunnel and a bridge...
Tunnel (GBT; German: Gotthard-Basistunnel, Italian: Galleria di base del San Gottardo, Romansh: Tunnel da basa dal Sogn Gottard) is a railway tunnel through...
wind tunnels that may run continuously. Examples of impulse facilities are the shock tube, the shock tunnel, the expansion tube, the expansiontunnel, and...
The Blackwall Tunnel is a pair of road tunnels underneath the River Thames in east London, England, linking the London Borough of Tower Hamlets with the...
The Simplon Tunnel (Simplontunnel, Traforo del Sempione or Galleria del Sempione) is a railway tunnel on the Simplon railway that connects Brig, Switzerland...
The Montague Street Tunnel (/ˈmɒntəɡuː/) is a rail tunnel of the New York City Subway under the East River between the boroughs of Manhattan and Brooklyn...
Crossing, commonly known as the Dartford Crossing and until 1991 the Dartford Tunnel, is a major road crossing of the River Thames in England, carrying the A282...
This is an alphabetical list of wind tunnels. "A2 wind tunnel". Retrieved 26 January 2024. "ACE Climatic Wind Tunnel". Retrieved 26 January 2024. "Fly for...
The Vereina Tunnel is a railway tunnel, and the principal part of the Vereina railway line, in the canton of Graubünden in eastern Switzerland. It connects...
diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate...
the Channel Tunnel to the United Kingdom, and Thalys which operated in Western Europe. The operator is exploring future network expansions and aims to...
freeway. The freeway expansion and upgrade was completed in 1993. The expansion included construction of a new, parallel tunnel with a larger diameter...
The Metro Tunnel, formerly known as Melbourne Metro Rail (MMR), is a underground heavy rail project currently under construction in Melbourne, Victoria...
made expansion proposals. One of them would have involved an extension of the IRT Flushing Line under the Hudson River with a three-track tunnel and then...
GO Expansion, previously known as GO Regional Express Rail (RER), is a project to improve GO Transit train service by adding all-day, two-way service...
downtown Las Vegas. The next planned expansion was for tunnels to the Encore and Westgate resorts. The Boring Company tunnel boring machine, Prufrock-2, was...
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